EP0018870A1 - Nailing tool including a percussion bolt - Google Patents

Nailing tool including a percussion bolt Download PDF

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Publication number
EP0018870A1
EP0018870A1 EP80400477A EP80400477A EP0018870A1 EP 0018870 A1 EP0018870 A1 EP 0018870A1 EP 80400477 A EP80400477 A EP 80400477A EP 80400477 A EP80400477 A EP 80400477A EP 0018870 A1 EP0018870 A1 EP 0018870A1
Authority
EP
European Patent Office
Prior art keywords
counterweight
bore
rear portion
barrel
slides
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80400477A
Other languages
German (de)
French (fr)
Other versions
EP0018870B1 (en
Inventor
Marc Combette
Jean Ollivier
Elmer Raleigh Hodil
Richard Beton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olin Corp
Original Assignee
Olin Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olin Corp filed Critical Olin Corp
Priority to AT80400477T priority Critical patent/ATE1935T1/en
Publication of EP0018870A1 publication Critical patent/EP0018870A1/en
Application granted granted Critical
Publication of EP0018870B1 publication Critical patent/EP0018870B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil

Definitions

  • the present invention relates to a sealing device comprising a barrel and a counterweight arranged to slide inside the barrel under the action of combustion gases produced by the deflagration of a propellant charge and to drive a fastening element previously introduced into the barrel, intended to anchor fastening elements in hard materials, such as concrete and cement, wood, steel, or similar materials.
  • the apparatus of British patent 834 293 comprises a counterweight arranged to receive a fixing element, the assembly of the counterweight and this element prior to firing constituting a long operation. After firing the device, the separation of the two parts, if at all possible, is even worse. In addition, many weights must be available, as well as fasteners of different diameters. Finally, we did not have with this device suitable elements for driving nails. Such drawbacks have therefore led to the abandonment of such a device.
  • German patent 1 224 218 has a mass monkfish provided with a housing intended to receive the head of a fixing element and consequently to center it using a washer of plastic material sufficiently flexible to slide inside two bores of different diameters.
  • the fastening assembly made with such a device is not so good and in addition one must use a special rod to introduce a fastening element into the device and return the weight to its firing position.
  • the apparatus of British patents 734,344 and 901,023 comprises a fastening element with two centering means, the first consisting of the tip guide for guiding a washer mounted on the rod portion of the fastening element according to the patent 734 344, the second centering means being constituted by the head portion of the fixing element, or a cap mounted on it, cooperating with the tip guide, while according to patent 901 023, the second centering means is constituted by a housing extending in the front end of the counterweight and receiving the head of the fixing element or a projecting portion extending behind the rear end of the latter.
  • the front end of the counterweight before firing is arranged and centered in the tip guide and consequently the length of the stem of the counterweight which slides in the tip guide must be substantially greater. than the length of the longest fastener to be anchored by the device. Consequently, these devices are limited in size as regards the length of the fastening elements since long fastening elements would lead to devices of considerable length with a heavy flyweight.
  • the present invention therefore aims to solve the problems which have arisen on the devices of the prior art.
  • the present invention relates to an apparatus of the type mentioned above, characterized in that the counterweight comprises a rear portion and a front portion offset transversely relative to the longitudinal direction of the barrel and shaped to slide in two corresponding bores .
  • the counterweight using its rear portion, can be guided in the bore in which this rear portion slides, while the fixing element introduced into the bore receiving the front portion of the counterweight is centered on its entire length without the need for a long flyweight. Consequently, the invention provides a relatively short device for anchoring long fastening elements with complete centering of these elements during their driving movement.
  • the wall formed at the front end of the rear driven and guided portion of the counterweight and by the wall formed at the rear end of the front drive portion of the counterweight.
  • These walls can be used in conjunction with a damping effect, / power adjustment, a safety effect, the ejection of the fastening elements, etc.
  • the length of one of the bores can be adjustable, while the length of the other remains constant or can also be adjustable.
  • the apparatus of the invention comprises a barrel tube 1 inside which is disposed an elongated element 3 fixed to the tube 1 by means of a screw 2.
  • the elongated element 3 has two longitudinal and intersecting bores 4 and 5, the bore 4 being closed at the left end, in the figure, while the bore 5 is closed at the right end in the figure.
  • a sleeve 7 is screwed onto the tube 1 and has a bore 6 aligned with the bore 4 of the element 3, the bores 4 and 6 having the same diameter.
  • a bore 8 of smaller diameter than bore 6 is formed behind the bore 6 for receiving a cartridge support 9 provided with a central bore forming a combustion chamber 10 for a cartridge 11.
  • a counterweight 12 having a rear portion 13 and a front portion 14 is slidably mounted inside the elongated element 3.
  • the rear portion 13 is slidably mounted in the bores 6 and 4 and the front portion is slidably mounted in the bore 5.
  • the rear portion 13, when the appliance is ignited, is driven by the pressure of the combustion gases, while the front portion 14 drives a fixing element, not shown, having been previously introduced into the bore 5, between the front end 18 of the element 3 and the front end 17 of the front portion 14 of the counterweight 12.
  • a wall 15 is provided at the front end of the rear portion 13 of the counterweight 12.
  • the counterweight 12 comprises a rear portion 13, a front portion 14 transversely offset relative to the longitudinal direction of the barrel and shaped to slide respectively in the two bores 4 and 5.
  • the front end of the bore 4 in which the portion slides rear 13 of the counterweight 12 is disposed in front of the rear end of the bore 5 in which slides the front portion 14 of the counterweight 12.
  • the front end of the bore 5 in which slides the front portion 14 of the counterweight 12 is arranged in front of the front end of the bore 4 in which the rear portion 13 of the counterweight 12 slides.
  • a washer 21 of the same outside diameter as the head 20 of the fastening element 19 is mounted on the rod of the element 19.
  • the bore 5 comprises a semi-cylindrical wall extended by two parallel flat walls and spaced apart by a distance equal to the diameter of this cylindrical wall mentioned above.
  • two portions 22 of the cylindrical wall remain, as can be seen in FIG. 3, and the head 20 and the washer 21 of the fixing element 19 bear against these two portions 22 as well as against the inner wall of the element 3.
  • the counterweight 12 has a second rear portion 24 slidably mounted in a bore 25 aligned with the bore 5.
  • the bore 25 may even extend through the handle, not shown, of the device and the portion 24 can be long enough so that part of it is never exposed to the action of the combustion gases.
  • the rear end of the portion 24 may have the shape of a truncated cone arranged to cooperate, when the counterweight is in its rear position, with a corresponding truncated cone formed in a recess in the device.
  • the frictional cooperation of the rear end of the portion 24 of the counterweight 12 and of the housing in the device prevents the counterweight from moving during the handling of the device, and also makes it possible to obtain a ballistic effect in the measurement where the flyweight only starts to move from a predetermined pressure prevailing in the combustion chamber after the ignition of the appliance.
  • the rear portion 24 can also be combined with an adjustable stop so as to vary the volume between the rear end of the rear portion 13 of the counterweight 12 and the cartridge 11.
  • the rear portion 24 may also include means arranged to pull the counterweight 12 after the use of the device. This can be done manually or automatically by opening the device. These means may have the form of an element projecting transversely to the device and provided at the rear end of the portion 24 which, when the device is opened, abuts against a fixed portion of the handle of the 'apparatus. When the barrel 1 slides forward, to the left in the drawings, the counterweight 12 is moved through the bores 4, 5 and 6 in its rear firing position.
  • This projecting element is arranged to come into abutment against a fixed part situated, before the propulsion of the counterweight 12, at a distance from this projecting element less than the distance separating the front end, from the bore 4 in which slides the rear portion 13 of the counterweight 12, and the front end of the rear portion 13 of the mass monkfish 12.
  • This projecting element can be detachably attached to the portion 24. It is also possible to provide that said fixed part is fixed to the device in a detachable manner. Thus, this projecting element is used as a stop for the counterweight when the cartridge has supplied too much energy.
  • This projecting element or this portion fixed to the handle of the device can be arranged to be sheared.
  • spring means can be provided between this projecting element and the portion fixed to the handle of the device.
  • the second rear portion 24 can also serve as a safety device when the device is dropped, or as a retaining means, preventing the counterweight from moving if the cartridge is ignited.
  • a groove can be made on the portion 24 to receive a locking element or a trigger in order to retain the counterweight as long as the trigger has not actuated the trigger to release it from this groove.
  • the bore 25 is open at the rear part of the handle of the apparatus, a rod of suitable size can be introduced into this bore to push the counterweight 12, whether or not it is provided with this portion 24.
  • a fastener which has been wrongly inserted into the device may be ejected.
  • the front wall 15 of the counterweight 12 can advantageously constitute stop means for the counterweight when the energy of the cartridge is too high.
  • This wall can be arranged to receive by screwing a small piston 26 intended to be received in a housing 27, of the same section, formed in the wall 16 of the elongate element 3, thus making it possible to obtain pneumatic damping.
  • the housing 27 can also be filled with an elastic material. The means 26 and 27 can be reversed, the small piston then being fixed to the wall 16.
  • the small piston and its housing can be used as a hammer and anvil for a metal washer disposed in a slot in the wall 16.
  • This front portion 16 of the element 3 can also be mounted to slide against the action of elastic means d '' an external depreciation system.
  • the relative position of the front wall 18 and of the remaining elements of the apparatus can vary so as to control the overpower of the front portion 14 of the counterweight 12.
  • the counterweight 12 can be formed from different assembled parts, damping means being able to be interposed between these parts.
  • the central part of the counterweight 12 can be weakened in an appropriate place, so as to retain inside the barrel of the apparatus, in the event of a fracture, a broken part of this counterweight.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)

Abstract

Appareil de scellement comprenant un canon (1,3) et une masselotte (12,13,14) agencée pour coulisser à l'intérieur du canon (1,3) sous l'action de gaz de combustion produits par une charge propulsive (11) et pour entraîner un élément de fixation. La masselotte comporte une porion arrière (13), une portion avant (14) décaléestransversalement et conformées pour coulisser dans deux alésages (4 et 5) respectivement. L'invention permet d'ancrer des éléments de fixation longs avec un appareil court.Sealing apparatus comprising a barrel (1,3) and a counterweight (12,13,14) arranged to slide inside the barrel (1,3) under the action of combustion gases produced by a propellant charge (11 ) and to drive a fastener. The counterweight has a rear portion (13), a front portion (14) offset transversely and shaped to slide in two bores (4 and 5) respectively. The invention allows long fastening elements to be anchored with a short device.

Description

La présente invention concerne un appareil de scellement comprenant un canon et une masselotte agencée pour coulisser à l'intérieur du canon sous l'action de gaz de combustion produits par la déflagration d'une charge propulsive et pour entraîner un élément de fixation préalablement introduit dans le canon, destiné à ancrer des éléments de fixation dans des matériaux durs, tels que du béton et du ciment, du bois, de l'acier, ou des matériaux analogues.The present invention relates to a sealing device comprising a barrel and a counterweight arranged to slide inside the barrel under the action of combustion gases produced by the deflagration of a propellant charge and to drive a fastening element previously introduced into the barrel, intended to anchor fastening elements in hard materials, such as concrete and cement, wood, steel, or similar materials.

De tels appareils sont déjà connus, notamment par les brevets britanniques 734 344, 834 293 et 901 023, ainsi que par le brevet allemand 1 224 218.Such devices are already known, in particular by the British patents 734,344, 834,293 and 901,023, as well as by the German patent 1,224,218.

L'appareil du brevet britannique 834 293 comporte une masselotte agencée pour recevoir un élément de fixation, l'assemblage de la masselotte et de cet élément préalablement à la mise à feu constituant une opération longue. Après la mise à feu de l'appareil, la séparation des deux pièces, si tant est qu'elle soit possible, est même pire. En outre, on doit disposer de nombreuses masselottes, ainsi que d'éléments de fixation de diamètres différents. Enfin, on ne disposait pas avec cet appareil d'éléments appropriés pour entraîner des clous. De tels inconvénients ont par conséquent conduit à abandonner un tel appareil.The apparatus of British patent 834 293 comprises a counterweight arranged to receive a fixing element, the assembly of the counterweight and this element prior to firing constituting a long operation. After firing the device, the separation of the two parts, if at all possible, is even worse. In addition, many weights must be available, as well as fasteners of different diameters. Finally, we did not have with this device suitable elements for driving nails. Such drawbacks have therefore led to the abandonment of such a device.

L'appareil du brevet allemand 1 224 218 comporte une masselotte pourvue d'un logement destiné à recevoir la tête d'un élément de fixation et par conséquent le centrer à l'aide d'une rondelle en matériau plastique suffisamment flexible pour coulisser à l'intérieur de deux alésages de diamètres différents. L'assemblage de fixation réalisé avec un tel appareil n'est pas si bon et en outre on doit utiliser une tige spéciale pour introduire un élément de fixation dans l'appareil et ramener la masselotte dans sa position de mise à feu. Bien qu'un tel appareil soit léger et court, ces inconvénients ont également conduit à l'abandonner pratiquement.The apparatus of German patent 1 224 218 has a mass monkfish provided with a housing intended to receive the head of a fixing element and consequently to center it using a washer of plastic material sufficiently flexible to slide inside two bores of different diameters. The fastening assembly made with such a device is not so good and in addition one must use a special rod to introduce a fastening element into the device and return the weight to its firing position. Although such an apparatus is light and short, these drawbacks have also led to practically abandoning it.

L'appareil des brevets britanniques 734 344 et 901 023 comporte un élément de fixation avec deux moyens de centrage, le premier consistant dans le guide-pointe pour guider une rondelle montée sur la portion de tige de l'élément de fixation selon le brevet 734 344, le deuxième moyen de centrage étant constitué par la portion de tête de l'élément de fixation, ou un capuchon monté sur elle, coopérant avec le guide-pointe, alors que selon le brevet 901 023, le second moyen de centrage est constitué par un logement s'étendant dans l'extrémité avant de la masselotte et recevant la tête de l'élément de fixation ou une portion en saillie s'étendant en arrière de l'extrémité arrière de celle-ci. Selon ces deux brevets, l'extrémité avant de la masselotte avant la mise à feu est disposée et centrée dans le guide-pointe et par conséquent.la longueur de la tige de la masselotte qui coulisse dans le guide-pointe doit être sensiblement plus grande que la longueur de l'élément de fixation le plus long destiné à être ancré par l'appareil. En conséquence, ces appareils sont limités en dimensions en ce qui concerne la longueur des éléments de fixation puisque des éléments de fixation longs conduiraient à des appareils d'une longueur importante avec une masselotte lourde.The apparatus of British patents 734,344 and 901,023 comprises a fastening element with two centering means, the first consisting of the tip guide for guiding a washer mounted on the rod portion of the fastening element according to the patent 734 344, the second centering means being constituted by the head portion of the fixing element, or a cap mounted on it, cooperating with the tip guide, while according to patent 901 023, the second centering means is constituted by a housing extending in the front end of the counterweight and receiving the head of the fixing element or a projecting portion extending behind the rear end of the latter. According to these two patents, the front end of the counterweight before firing is arranged and centered in the tip guide and consequently the length of the stem of the counterweight which slides in the tip guide must be substantially greater. than the length of the longest fastener to be anchored by the device. Consequently, these devices are limited in size as regards the length of the fastening elements since long fastening elements would lead to devices of considerable length with a heavy flyweight.

La présente invention vise donc à résoudre les problèmes qui ont surgi sur les appareils de l'art antérieur.The present invention therefore aims to solve the problems which have arisen on the devices of the prior art.

A cet effet, la présente invention concerne un appareil du type mentionné ci-dessus, caractérisé par le fait que la masselotte comporte une portion arrière et une portion avant décalées transversalement par rapport à la direction longitudinale du canon et conformées pour coulisser dans deux alésages correspondants.To this end, the present invention relates to an apparatus of the type mentioned above, characterized in that the counterweight comprises a rear portion and a front portion offset transversely relative to the longitudinal direction of the barrel and shaped to slide in two corresponding bores .

Ainsi, la masselotte, à l'aide de sa portion arrière, peut être guidée dans l'alésage dans lequel coulisse cette portion arrière, alors que l'élément de fixation introduit dans l'alésage recevant la portion avant de la masselotte est centré sur toute sa longueur sans qu'il soit besoin d'avoir une longue masselotte. Par conséquent, l'invention procure un appareil relativement court pour ancrer des éléments de fixation longs avec un centrage complet de ces éléments durant leur mouvement d'entrainement.Thus, the counterweight, using its rear portion, can be guided in the bore in which this rear portion slides, while the fixing element introduced into the bore receiving the front portion of the counterweight is centered on its entire length without the need for a long flyweight. Consequently, the invention provides a relatively short device for anchoring long fastening elements with complete centering of these elements during their driving movement.

D'autres avantages de l'invention sont fournis par la paroi formée à l'extrémité avant de la portion arrière entraînée et guidée de la masselotte et par la paroi formée à l'extrémité arrière de la portion avant d'entraînement de la masselotte. Ces parois peuvent être utilisées en liaison avec un effet d'amortissement, / réglage de puissance, un effet de sécurité, l'éjection des éléments de fixation, etc. La longueur de l'un des alésages peut être réglable, alors que la longueur de l'autre reste constante ou peut être également réglable.Other advantages of the invention are provided by the wall formed at the front end of the rear driven and guided portion of the counterweight and by the wall formed at the rear end of the front drive portion of the counterweight. These walls can be used in conjunction with a damping effect, / power adjustment, a safety effect, the ejection of the fastening elements, etc. The length of one of the bores can be adjustable, while the length of the other remains constant or can also be adjustable.

Dans le cas où la poignée et le guide-pointe de l'appareil de l'invention sont disposés de part et d'autre de l'axe du canon, il est possible d'ancrer des éléments de fixation à proximité de coins, puisque l'axe de l'alésage recevant les éléments de fixation est décentré par rapport au canon.In the case where the handle and the tip guide of the apparatus of the invention are arranged on either side of the axis of the barrel, it is possible to anchor fastening elements near corners, since the axis of the bore receiving the fastening elements is offset from the barrel.

L'invention sera mieux comprise à l'aide de la description suivante de plusieurs formes de réalisation préférées de l'appareil de l'invention en référence au dessin annexé sur lequel :

  • - La figure 1 est une vue en coupe longitudinale du canon d'une première forme de réalisation de l'appareil de l'invention ;
  • - La figure 2 est une vue en coupe transversale selon la ligne II-II de la figure 1 ;
  • - La figure 3 est une vue en coupe transversale selon la ligne III-III de la figure 1 ;
  • - La figure 4 est une vue de face de la masselotte de l'appareil de la figure 1 ;
  • - La figure 5 est une vue longitudinale d'un élément de fixation destiné à être entrainé par l'appareil de l'invention, et
  • - La figure 6 est une vue en coupe longitudinale d'unedeuxiè- me forme de réalisation de l'appareil de l'invention.
The invention will be better understood with the aid of the following description of several preferred embodiments of the apparatus of the invention with reference to the appended drawing in which:
  • - Figure 1 is a longitudinal sectional view of the barrel of a first embodiment of the apparatus of the invention;
  • - Figure 2 is a cross-sectional view along line II-II of Figure 1;
  • - Figure 3 is a cross-sectional view along line III-III of Figure 1;
  • - Figure 4 is a front view of the counterweight of the device of Figure 1;
  • FIG. 5 is a longitudinal view of a fixing element intended to be driven by the apparatus of the invention, and
  • - Figure 6 is a longitudinal sectional view of a second embodiment of the apparatus of the invention.

En référence à la figure 1, l'appareil de l'invention comporte un tube de canon 1 à l'intérieur duquel est disposé un élément allongé 3 fixé au tube 1 à l'aide d'une vis 2. L'élément allongé 3 comporte deux alésages 4 et 5 longitudinaux et sécants, l'alésage 4 étant fermé à l'extrémité gauche, sur la figure, alors que l'alésage 5 est fermé à l'extrémité droite sur la figure. Un manchon 7 est vissé sur le tube 1 et comporte un alésage 6 aligné avec l'alésage 4 de l'élément 3, les alésages 4 et 6 ayant le même diamètre. Un alésage 8 de diamètre plus petit que l'alésage 6 est formé derrière l'alésage 6 pour recevoir un support de cartouche 9 pourvu d'un alésage central formant une chambre de combustion 10 pour une cartouche 11.Referring to Figure 1, the apparatus of the invention comprises a barrel tube 1 inside which is disposed an elongated element 3 fixed to the tube 1 by means of a screw 2. The elongated element 3 has two longitudinal and intersecting bores 4 and 5, the bore 4 being closed at the left end, in the figure, while the bore 5 is closed at the right end in the figure. A sleeve 7 is screwed onto the tube 1 and has a bore 6 aligned with the bore 4 of the element 3, the bores 4 and 6 having the same diameter. A bore 8 of smaller diameter than bore 6 is formed behind the bore 6 for receiving a cartridge support 9 provided with a central bore forming a combustion chamber 10 for a cartridge 11.

Une masselotte 12 possédant une portion arrière 13 et une portion avant 14 est montée coulissante à l'intérieur de l'élément allongé 3. La portion arrière 13 est montée coulissante dans les alésages 6 et 4 et la portion avant est montée coulissante dans l'alésage 5. La portion arrière 13, à la mise à feu de l'appareil, est entraînée par la pression des gaz de combustion, alors que la portion avant 14 entraîne un élément de fixation, non représenté, ayant été préalablement introduit dans l'alésage 5, entre l'extrémité avant 18 de l'élément 3 et l'extrémité avant 17 de la portion avant 14 de la masselotte 12.A counterweight 12 having a rear portion 13 and a front portion 14 is slidably mounted inside the elongated element 3. The rear portion 13 is slidably mounted in the bores 6 and 4 and the front portion is slidably mounted in the bore 5. The rear portion 13, when the appliance is ignited, is driven by the pressure of the combustion gases, while the front portion 14 drives a fixing element, not shown, having been previously introduced into the bore 5, between the front end 18 of the element 3 and the front end 17 of the front portion 14 of the counterweight 12.

Une paroi 15 est prévue à l'extrémité avant de la portion arrière 13 de la masselotte 12. Ainsi, après la mise à feu, la masselotte 12 est entrainée, ou bien jusqu'à ce que son énergie cinétique soit absorbée par l'assemblage de fixation, ou bien jusqu'à ce que sa paroi 15 vienne en butée contre la paroi de fermeture 16 formée sur l'élément allongé 3.A wall 15 is provided at the front end of the rear portion 13 of the counterweight 12. Thus, after the ignition, the counterweight 12 is driven, or until its kinetic energy is absorbed by the assembly attachment, or until its wall 15 abuts against the closure wall 16 formed on the elongate element 3.

Ainsi, la masselotte 12 comporte une portion arrière 13, une portion avant 14 décaléestransversalement par rapport à la direction longitudinale du canon et conforméespour coulisser respectivement dans les deux alésages 4 et 5. L'extrémité avant de l'alésage 4 dans lequel coulisse la portion arrière 13 de la masselotte 12 est disposée en avant de l'extrémité arrière de l'alésage 5 dans lequel coulisse la portion avant 14 de la masselotte 12. En outre, l'extrémité avant de l'alésage 5 dans lequel coulisse la portion avant 14 de la masselotte 12 est disposée en avant de l'extrémité avant de l'alésage 4 dans lequel coulisse la portion arrière 13 de la masselotte 12.Thus, the counterweight 12 comprises a rear portion 13, a front portion 14 transversely offset relative to the longitudinal direction of the barrel and shaped to slide respectively in the two bores 4 and 5. The front end of the bore 4 in which the portion slides rear 13 of the counterweight 12 is disposed in front of the rear end of the bore 5 in which slides the front portion 14 of the counterweight 12. In addition, the front end of the bore 5 in which slides the front portion 14 of the counterweight 12 is arranged in front of the front end of the bore 4 in which the rear portion 13 of the counterweight 12 slides.

Pendant le mouvement de la masselotte, sa portion avant 14 pousse, par l'intermédiaire de son extrémité avant 17, la tête 20 d'un élément de fixation 19 (fig. 5) qui pénètre d'abord la pièce à fixer, puis ensuite le matériau-support de cette pièce.During the movement of the counterweight, its front portion 14 pushes, via its front end 17, the head 20 of a fastening element 19 (fig. 5) which first penetrates the part to be fixed, then thereafter the support material for this part.

A cause de contraintes asymétriques, il est nécessaire, pour obtenir un bon assemblage, de guider l'élément de fixation durant son mouvement. Ainsi, une rondelle 21 de même diamètre extérieur que la tête 20 de l'élément de fixation 19 est montée sur la tige de l'élément 19.Because of asymmetric constraints, it is necessary, to obtain a good assembly, to guide the fixing element during its movement. Thus, a washer 21 of the same outside diameter as the head 20 of the fastening element 19 is mounted on the rod of the element 19.

La section transversale de l'alésage 5 permet à la tête 20 de l'élément de fixation 19 de coulisser librement dans l'alésage pratiquement sans jeu et c'est pourquoi d'ailleurs le moyen 5 a été appelé "alésage".The cross section of the bore 5 allows the head 20 of the fastening element 19 to slide freely in the bore practically without play and this is why, moreover, the means 5 has been called "bore".

Dans sa région avant, comme on peut le voir sur la fig. 2, l'alésage 5 comporte une paroi demi-cylindrique prolongée par deux parois planes parallèles et éloignées d'une distance égale au diamètre de cette paroi cylindrique mentionnée ci-dessus. Dans la région d'intersection des alésages 4 et 5, deux portions 22 de la paroi cylindrique subsistent, comme on peut le voir sur la figure 3, et la tête 20 et la rondelle 21 de l'élément de fixation 19 viennent en appui contre ces deux portions 22 ainsi que contre la paroi intérieure de l'élément 3.In its front region, as can be seen in fig. 2, the bore 5 comprises a semi-cylindrical wall extended by two parallel flat walls and spaced apart by a distance equal to the diameter of this cylindrical wall mentioned above. In the region of intersection of the bores 4 and 5, two portions 22 of the cylindrical wall remain, as can be seen in FIG. 3, and the head 20 and the washer 21 of the fixing element 19 bear against these two portions 22 as well as against the inner wall of the element 3.

En référence à la figure 6, la masselotte 12 comporte une deuxième portion arrière 24 montée coulissante dans un alésage 25 aligné avec l'alésage 5. L'alésage 25 peut même s'étendre à travers la poignée, non représentée, de l'appareil et la portion 24 peut être suffisamment longue pour qu'une partie de celle-ci ne soit jamais exposée à l'action des gaz de combustion.Referring to Figure 6, the counterweight 12 has a second rear portion 24 slidably mounted in a bore 25 aligned with the bore 5. The bore 25 may even extend through the handle, not shown, of the device and the portion 24 can be long enough so that part of it is never exposed to the action of the combustion gases.

L'extrémité arrière de la portion 24 peut avoir la forme d'un tronc de cône agencé pour coopérer, lorsque la masselotte est dans sa position arrière, avec un tronc de cône correspondant formé dans un évidement ménagé dans l'appareil. La coopération par friction de l'extrémité arrière de la portion 24 de la masselotte 12 et du logement dans l'appareil empêche la masselotte de se déplacer durant la manutention de l'appareil, et permet d'obtenir également un effet balistique dans la mesure où la masselotte ne commence à se déplacer qu'à partir d'une pression prédéterminée régnant dans la chambre de combustion après la mise à feu de l'appareil.The rear end of the portion 24 may have the shape of a truncated cone arranged to cooperate, when the counterweight is in its rear position, with a corresponding truncated cone formed in a recess in the device. The frictional cooperation of the rear end of the portion 24 of the counterweight 12 and of the housing in the device prevents the counterweight from moving during the handling of the device, and also makes it possible to obtain a ballistic effect in the measurement where the flyweight only starts to move from a predetermined pressure prevailing in the combustion chamber after the ignition of the appliance.

La portion arrière 24 peut également être combinée avec une butée réglable de manière à faire varier le volume entre l'extrémité arrière de la portion arrière 13 de la masselotte 12 et la cartouche 11.The rear portion 24 can also be combined with an adjustable stop so as to vary the volume between the rear end of the rear portion 13 of the counterweight 12 and the cartridge 11.

La portion arrière 24 peut également comporter des moyens agencés pour tirer la masselotte 12 après l'utilisation de l'appareil. Ceci peut être effectué manuellement ou automatiquement en ouvrant l'appareil. Ces moyens peuvent avoir la forme d'un élément en saillie transversalement à l'appareil et prévu à l'extrémité arrière de la portion 24 qui, lorsqu'on ouvre l'appareil, vient en butée contre une portion fixe de la poignée de l'appareil. Lorsque le canon 1 coulisse vers l'avant, vers la gauche sur les dessins, la masselotte 12 est déplacée à travers les alésages 4, 5 et 6 dans sa position arrière de mise à feu. Cet élément en saillie est disposé pour venir en appui contre une pièce fixe située, avant la propulsion de la masselotte 12, à une distance de cet élément en saillie inférieure à la distance séparant l'extrémité avant, de l'alésage 4 dans lequel coulisse la portion arrière 13 de la masselotte 12, et l'extrémité avant de la portion arrière 13 de la masselotte 12. Cet élément en saillie peut être fixé à la portion 24 de façon détachable. Il est également possible de prévoir que la dite pièce fixe soit fixée sur l'appareil de façon détachable. Ainsi, cet élément en saillie est utilisé comme butée pour la masselotte lorsque la cartouche a fourni trop d'énergie.The rear portion 24 may also include means arranged to pull the counterweight 12 after the use of the device. This can be done manually or automatically by opening the device. These means may have the form of an element projecting transversely to the device and provided at the rear end of the portion 24 which, when the device is opened, abuts against a fixed portion of the handle of the 'apparatus. When the barrel 1 slides forward, to the left in the drawings, the counterweight 12 is moved through the bores 4, 5 and 6 in its rear firing position. This projecting element is arranged to come into abutment against a fixed part situated, before the propulsion of the counterweight 12, at a distance from this projecting element less than the distance separating the front end, from the bore 4 in which slides the rear portion 13 of the counterweight 12, and the front end of the rear portion 13 of the mass monkfish 12. This projecting element can be detachably attached to the portion 24. It is also possible to provide that said fixed part is fixed to the device in a detachable manner. Thus, this projecting element is used as a stop for the counterweight when the cartridge has supplied too much energy.

Cet élément en saillie ou cette portion fixée sur la poignée de l'appareil peuvent être agencés pour être cisaillés.This projecting element or this portion fixed to the handle of the device can be arranged to be sheared.

Afin d'obtenir un effet d'amortissement, il peut être prévu des moyens de ressort entre cet élément en saillie et la portion fixée sur la poignée de l'appareil.In order to obtain a damping effect, spring means can be provided between this projecting element and the portion fixed to the handle of the device.

La deuxième portion arrière 24 peut également servir de dispositif de sécurité lorsqu'on laisse tomber l'appareil, ou de moyen de retenue, empêchant la masselotte de se déplacer si la cartouche est mise à feu. Une rainure peut être ménagée sur la portion 24 pour recevoir un élément de verrouillage ou une détente dans le but de retenir la masselotte aussi longtemps que la gâchette n'a pas actionné la détente pour la dégager de cette rainure.The second rear portion 24 can also serve as a safety device when the device is dropped, or as a retaining means, preventing the counterweight from moving if the cartridge is ignited. A groove can be made on the portion 24 to receive a locking element or a trigger in order to retain the counterweight as long as the trigger has not actuated the trigger to release it from this groove.

Si l'alésage 25 est ouvert à la partie arrière de la poignée de l'appareil, une tige de dimension appropriée peut être introduite dans cet alésage pour pousser la masselotte 12, qu'elle soit ou non pourvue de cette portion 24. Ainsi, un élément de fixation qui aurait été introduit à tort dans l'appareil pourra être éjecté.If the bore 25 is open at the rear part of the handle of the apparatus, a rod of suitable size can be introduced into this bore to push the counterweight 12, whether or not it is provided with this portion 24. Thus, a fastener which has been wrongly inserted into the device may be ejected.

La paroi frontale 15 de la masselotte 12 peut avantageusement constituer des moyens de butée pour la masselotte lorsque l'énergie de la cartouche est trop élevée. Cette paroi peut être agencée pour recevoir par vissage un petit piston 26 destiné à être reçu dans un logement 27, de même section, ménagé dans la paroi 16 de l'élément allongé 3, permettant ainsi d'obtenir un amortissement pneumatique. Le logement 27 peut également être rempli d'un matériau élastique. Les moyens 26 et 27 peuvent être intervertis, le petit piston étant alors fixé à la paroi 16.The front wall 15 of the counterweight 12 can advantageously constitute stop means for the counterweight when the energy of the cartridge is too high. This wall can be arranged to receive by screwing a small piston 26 intended to be received in a housing 27, of the same section, formed in the wall 16 of the elongate element 3, thus making it possible to obtain pneumatic damping. The housing 27 can also be filled with an elastic material. The means 26 and 27 can be reversed, the small piston then being fixed to the wall 16.

Le petit piston et son logement peuvent être utilisés comme marteau et enclume pour une rondelle métallique disposée dans une fente ménagée dans la paroi 16. Cette portion avant 16 de l'élément 3 peut également être montée pour coulisser contre l'action de moyens élastiques d'un système d'amortissement externe.The small piston and its housing can be used as a hammer and anvil for a metal washer disposed in a slot in the wall 16. This front portion 16 of the element 3 can also be mounted to slide against the action of elastic means d '' an external depreciation system.

A l'aide d'une portion de butée avant réglable de l'élément allongé 3, la position relative de la paroi frontale 18 et des éléments restants de l'appareil peut varier de manière à contrôler la surpuissance de la portion avant 14 de la masselotte 12.With the aid of an adjustable front stop portion of the elongated element 3, the relative position of the front wall 18 and of the remaining elements of the apparatus can vary so as to control the overpower of the front portion 14 of the counterweight 12.

La masselotte 12 peut être formée de différentes pièces assemblées, des moyens d'amortissement pouvant être interposés entre ces pièces.The counterweight 12 can be formed from different assembled parts, damping means being able to be interposed between these parts.

De même, la partie centrale de la masselotte 12 peut être affaiblie dans un endroit approprié, de manière à retenir à l'intérieur du canon de l'appareil, en cas de fracture, une partie cassée de cette masselotte.Similarly, the central part of the counterweight 12 can be weakened in an appropriate place, so as to retain inside the barrel of the apparatus, in the event of a fracture, a broken part of this counterweight.

Claims (16)

1. Appareil de scellement comprenant un canon et une masselotte agencée pour coulisser à l'intérieur du canon sous l'action de gaz de combustion produits par la déflagration d'une charge propulsive et pour entrainer un élément de fixation préalablement introduit dans le canon, caractérisé par le fait que la masselotte comporte une portion arrière et une portion avant décalées transversalement par rapport à la direction longitudinale du canon et conformées pour coulisser dans deux alésages correspondants.1. Sealing apparatus comprising a barrel and a counterweight arranged to slide inside the barrel under the action of combustion gases produced by the deflagration of a propellant charge and to drive a fastening element previously introduced into the barrel, characterized in that the counterweight comprises a rear portion and a front portion offset transversely relative to the longitudinal direction of the barrel and shaped to slide in two corresponding bores. 2. Appareil selon la revendication 1, dans lequel l'extrémité avant de l'alésage dans lequel coulisse la portion arrière de la masselotte est disposéeen avant de l'extrémité arrière de l'alésage dans lequel coulisse la portion avant de la masselotte.2. Apparatus according to claim 1, wherein the front end of the bore in which the rear portion of the counterweight slides is disposed in front of the rear end of the bore in which the front portion of the counterweight slides. 3. Appareil selon l'une des revendications 1 et 2, dans lequel l'extrémité avant de l'alésage dans lequel coulisse la portion avant de la masselotte est disposée en avant de l'extrémité avant de l'alésage dans lequel coulisse la portion arrière de la masselotte.3. Apparatus according to one of claims 1 and 2, wherein the front end of the bore in which slides the front portion of the weight is disposed in front of the front end of the bore in which slides the portion rear of the flyweight. 4. Appareil selon l'une des revendications 1 à 3, dans lequel la masselotte comporte une autre portion arrière agencée pour coulisser dans un troisième alésage ménagé dans la partie arrière du canon.4. Apparatus according to one of claims 1 to 3, wherein the counterweight has another rear portion arranged to slide in a third bore formed in the rear part of the barrel. 5. Appareil selon la revendication 4, dans lequel les extrémités arrière de la dite autre portion arrière de la masselotte et du troisième alésage sont tronconiques.5. Apparatus according to claim 4, wherein the rear ends of said other rear portion of the counterweight and the third bore are frustoconical. 6. Appareil selon l'une des revendications 4 et 5, dans lequel le troisième alésage comporte une paroi d'extrémité arrière réglable en position longitudinale.6. Apparatus according to one of claims 4 and 5, in the which the third bore has a rear end wall adjustable in longitudinal position. 7. Appareil selon l'une des revendications 4 à 6, dans lequel l'extrémité arrière de la dite autre portion arrière de la masselotte est pourvue d'un élément faisant saillie transversalement hors du dit troisième alésage.7. Apparatus according to one of claims 4 to 6, wherein the rear end of said other rear portion of the counterweight is provided with an element projecting transversely out of said third bore. 8. Appareil selon la revendication 7, dans lequel sont prévus des moyens élastiques agencés pour venir en appui contre cet élément en saillie et une pièce fixe de l'appareil.8. Apparatus according to claim 7, wherein there are provided elastic means arranged to bear against this projecting element and a fixed part of the apparatus. 9. Appareil selon l'une des revendications 4 à 8, dans lequel l'extrémité arrière de la dite autre portion arrière de la masselotte est agencée pour coopérer avec des moyens agencés pour retenir cette autre portion arrière.9. Apparatus according to one of claims 4 to 8, wherein the rear end of said other rear portion of the counterweight is arranged to cooperate with means arranged to retain this other rear portion. 10. Appareil selon l'une des revendications 1 à 3, dans lequel est ménagé un troisième alésage dans la partie arrière du canon, ouvert sur l'extérieur de l'appareil et sur l'alésage de la portion avant de la masselotte.10. Apparatus according to one of claims 1 to 3, wherein is formed a third bore in the rear part of the barrel, open on the outside of the apparatus and on the bore of the front portion of the counterweight. 11. Appareil selon la revendication 7, dans lequel le dit élément en saillie est agencé pour venir en appui contre une pièce fixée sur l'appareil située, avant la propulsion de la masselotte, à une distance de l'élément en saillie inférieure à la distance séparant l'extrémité avant, de l'alésage dans lequel coulisse la portion arrière de la masselotte, et l'extrémité avant de la portion arrière de la masselotte. e11. Apparatus according to claim 7, in which the said projecting element is arranged to come into abutment against a part fixed on the apparatus situated, before the propulsion of the counterweight, at a distance from the projecting element less than the distance separating the front end from the bore in which the rear portion of the counterweight slides, and the front end from the rear portion of the counterweight. e 12. Appareil selon la revendication 11, dans lequel le dit élément en saillie est fixé à la dite autre portion arrière de la masselotte de façon détachable.12. Apparatus according to claim 11, wherein said projecting element is fixed to said other rear portion of the counterweight detachably. 13. Appareil selon l'une des revendications 11 et 12, dans lequel la dite pièce est fixée sur l'appareil de façon détachable.13. Apparatus according to one of claims 11 and 12, wherein said part is fixed on the device detachably. 14. Appareil selon l'une des revendications 1 à 13, dans lequel l'extrémité avant de la portion arrière de la masselotte est munie d'un piston d'amortissement agencé pour être reçu dans un évidement correspondant ménagé à l'extrémité avant de l'alésage dans lequel coulisse cette portion arrière de la masselotte. 14 . Apparatus according to one of claims 1 to 13, wherein the front end of the rear portion of the counterweight is provided with a damping piston arranged to be received in a corresponding recess formed at the front end of the bore in which slides this rear portion of the counterweight. 15. Appareil-selon la revendication 14, dans lequel un matériau élastique est disposé dans l'évidement.15. Apparatus according to claim 14, wherein an elastic material is disposed in the recess. 16. Appareil selon la revendication 14, dans lequel l'évidement communique avec l'extérieur de l'appareil pour recevoir des moyens d'absorption d'énergie de la masselotte.16. Apparatus according to claim 14, wherein the recess communicates with the exterior of the apparatus to receive means for absorbing energy from the counterweight.
EP80400477A 1979-04-10 1980-04-09 Nailing tool including a percussion bolt Expired EP0018870B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400477T ATE1935T1 (en) 1979-04-10 1980-04-09 SETTING TOOL WITH ONE STRIKE PIN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7912654A GB2047604B (en) 1979-04-10 1979-04-10 Cartridge-actuated fastener-driving tools
GB7912654 1979-04-10

Publications (2)

Publication Number Publication Date
EP0018870A1 true EP0018870A1 (en) 1980-11-12
EP0018870B1 EP0018870B1 (en) 1982-12-08

Family

ID=10504478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400477A Expired EP0018870B1 (en) 1979-04-10 1980-04-09 Nailing tool including a percussion bolt

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US (1) US4333595A (en)
EP (1) EP0018870B1 (en)
JP (2) JPS569178A (en)
AR (1) AR225919A1 (en)
AT (1) ATE1935T1 (en)
AU (1) AU541925B2 (en)
BR (1) BR8002174A (en)
CA (1) CA1142702A (en)
DE (1) DE3061254D1 (en)
ES (1) ES490446A0 (en)
GB (1) GB2047604B (en)
NZ (1) NZ193295A (en)
ZA (1) ZA801853B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4695279B2 (en) * 2001-03-21 2011-06-08 日華化学株式会社 Flame retardant processing agent, flame retardant processing method, and flame retardant processed fiber
JP2005510369A (en) * 2001-11-02 2005-04-21 ポリ・システムズ・プロプライエタリー・リミテッド Nail gun
JP3920691B2 (en) 2002-04-12 2007-05-30 日華化学株式会社 Flame-retardant finishing agent, flame-retardant processing method, and flame-retardant processed product
CN106460478B (en) * 2014-04-28 2019-05-17 欧文石油工具有限合伙公司 For the equipment and correlation technique using gas-pressurized actuating wellbore tools

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1137446A (en) * 1915-03-18 1915-04-27 Walter A Gruenewald Hydrocarbon-engine.
US3040326A (en) * 1958-06-18 1962-06-26 Olin Mathieson Fastener device
US3044071A (en) * 1960-04-06 1962-07-17 Behrend Herbert Explosive actuated tool
FR1277541A (en) * 1961-01-10 1961-12-01 Improvements to reciprocating motor or operator piston machines
JPS433585Y1 (en) * 1964-09-03 1968-02-14
DE1478797C3 (en) * 1965-07-05 1975-12-04 Anstalt Fuer Montage-Technik, Vaduz Powder-powered fastening tool with a fastener guide and a piston stop
US3338141A (en) * 1965-07-16 1967-08-29 Olin Mathieson Power-actuated piston tool

Also Published As

Publication number Publication date
JPS569178A (en) 1981-01-30
GB2047604B (en) 1983-06-22
US4333595A (en) 1982-06-08
AU5726680A (en) 1980-10-16
AR225919A1 (en) 1982-05-14
GB2047604A (en) 1980-12-03
ATE1935T1 (en) 1982-12-15
JPS6258173U (en) 1987-04-10
CA1142702A (en) 1983-03-15
DE3061254D1 (en) 1983-01-13
ZA801853B (en) 1981-04-29
BR8002174A (en) 1980-11-25
ES8101443A1 (en) 1980-12-16
NZ193295A (en) 1984-03-16
EP0018870B1 (en) 1982-12-08
AU541925B2 (en) 1985-01-31
ES490446A0 (en) 1980-12-16

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